Integrated Camera Module VCM Driving Unit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile phone camera modules with full screens require a compact front camera design, but the separate placement of the driving unit outside the camera module leads to a larger size and susceptibility to environmental impacts, hindering volume reduction and assembly efficiency.
Innovation Solution
The camera module integrates a voice coil motor (VCM) and driving unit within a compact frame, using a magnetic member and moving member with sliding grooves and balls to reduce friction and size, eliminating the need for external springs and additional magnetic members, allowing precise lens movement and focusing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the driving unit is placed outside the camera module, then the camera module can be assembled separately, but the overall size increases and environmental susceptibility worsens
Solution Approach 1:
The patent integrates the driving unit directly into the camera module housing, merging two previously separate components into a unified structure. This eliminates the need for external placement of the driving unit while maintaining assembly feasibility, thereby reducing overall size and improving environmental protection without sacrificing manufacturing ease
2Ease of manufacture
If the driving unit is placed outside the camera module, then assembly is simplified, but reliability against environmental impact deteriorates
Solution Approach 1:
By integrating the driving unit within the camera module housing, the patent protects the driving unit from environmental factors such as dust, moisture, and temperature variations. The housing serves as a protective enclosure, maintaining reliability while the unified design does not complicate the assembly process
3Strength
If traditional spring-based mechanisms are used, then mechanical support is provided, but device complexity and size increase
Solution Approach 1:
The patent eliminates springs and additional magnetic members from the system by integrating the driving unit directly into the housing structure. The housing itself provides the necessary mechanical support and structural strength, removing unnecessary components and simplifying the overall device while maintaining required mechanical properties
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces the overall camera module size by approximately 1.5 mm, enhances focusing accuracy and speed, and lowers power consumption while improving long-term repeatability and assembly robustness.
Implementation Method 1
a voice coil motor (VCM)
Implementation Method 2
a magnetic member and moving member with sliding grooves and balls to reduce friction
Data Source
AI summary
An automatic focus apparatus for a camera module includes a voice coil motor and a driving unit. The voice coil motor includes a frame, a moving member with a lens, and a magnetic member. The magnetic member is positioned at a side wall of the moving member, the driving unit is positioned at a side plate of the frame. A magnetic field is generated by the driving unit and the magnetic member, the magnetic field drives the moving member with the lens to move, to achieve automatic focus.